Spring MVC和Maven集成

Question

我正在尝试构建一个Spring MVC项目,并且在尝试解决跟随错误时遇到了一些麻烦.

HTTP状态500 - 循环视图路径[登录]:将再次调度回当前处理程序URL [/ login].检查您的ViewResolver设置!(提示:由于默认的视图名称生成,这可能是未指定视图的结果.)

我通过终端输入以下命令:

mvn clean package
java -jar target/sprint2-0.1.0.jar

的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.teamvirus.src</groupId>
    <artifactId>sprint2</artifactId>
    <version>0.1.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>0.5.0.M6</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--><dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring3</artifactId>
        </dependency>-->

    </dependencies>

    <properties>
        <start-class>com.teamvirus.src.Application</start-class>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestone</id>
            <url>http://repo.spring.io/libs-milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestone</id>
            <url>http://repo.spring.io/libs-milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

</project>

LoginController.java

package com.teamvirus.src;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
public class LoginController {
    @RequestMapping("/login")
    public String login() {
        return "login";
    }

    @RequestMapping("/authenticate")
    public String authenticate(
            @RequestParam(value = "username", required = true) String username,
            @RequestParam(value = "password", required = true) String password) {
        if ((username.equals("admin") && password.equals("admin")))
            return "redirect:dashboard?username=" + username;
        else if ((username.equals("student1") && password.equals("student1"))) {
            return "redirect:dashboard?username=" + username;
        }
        return "wrongpassword";
    }
}

感谢所提供的任何帮助.

编辑:

Application.java

package com.teamvirus.src;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.SpringApplication;
import org.springframework.context.annotation.ComponentScan;

@ComponentScan
@EnableAutoConfiguration
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Answer 1

您完全依赖Spring Boot来配置所有内容,尽管这对您当前的视图来说应该不是问题.

默认情况下,Spring引导注册InternalResourceViewResolver但没有任何前缀/后缀.(见来源).假设您有自己的观点/WEB-INF/views并且它们是jsp文件,请执行以下操作

1. 在src\main\resources添加application.properties文件
2. 添加spring.view.prefix具有该值的属性/WEB-INF/views/
3. 添加spring.view.suffix值为".jsp" 的属性

重新包装并启动您的应用程序.

如果你没有这个额外的配置/login会导致回/login,这将导致回/login,这将导致回/login这将...那么你我猜的图片.(login是您从中引用的视图的名称@Controller).